While many types of birds have been known to nest in chimneys, the worst offender is doubtlessly the chimney swift. These deceptively harmless-looking little birds can occupy chimneys in the hundreds or thousands, causing a fire and sanitation hazard for homeowners. Even worse, since they are a protected species, chimney...

Now that it’s spring, you’ve probably noticed birds building nests in trees, bushes, empty mailboxes, and pretty much any other spot they can find. One place you really don’t want birds nesting? In your chimney. The very worst offender is probably the chimney swift, who can occupy chimneys in the...

  What Are Chimney Swifts? Chimney swifts are small birds that often reside inside of chimneys and air shafts. Their natural habitat is a large hollow tree, which they use to nest in the forests of North America that are becoming scarce due to deforesting. Chimney swifts are quite aerial...